Wrench.



No. 729,504. PATENIED MAY 26, 1903.

G. MOKEROHBR.

WRENCH.

APPLICATION FILED OUT. 9. 1902.

Patented May 26, 1903.

PATENT OFFIQE.-

GEORGE MCKEROHER, OF JACKSON, MICHIGAN, ASSIGNOR TO THE MOKEROHER WRENCH & TOOL COMPANY, OF JACKSON, MICHIGAN.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 729,504, dated May 26, 1903.

Application filed October 9, 1902.

To all whom it may concern:

Be it known that I, GEORGE MCKERCHER, a citizen of the United States, residing at J ackson, in the county of Jackson and State of Michigan, have invented certain new and useful Improvements in Wrenches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in wrenches, more especially the pipe type.

It has for its object to promote simplicity and efficiency in the use of the wrench or .tool and to lessen cost of manufacture of the same.

It consists of the detailed construction and arrangement of parts substantially as hereinafter more fully disclosed, and specifically pointed out by the claims.

In the accompanying drawings, illustrating the preferred embodiment of my invention, Figure 1 is a side elevation with a portion of one jaw removed disclosing the movable-jawretaining spring and its seat. Fig. 2 is adetached view'of said spring. Fig. 3 is a plan view of the wrench or tool.

Latitude is allowed herein as to changes in details which may come within the purview or spirit of my invention and the same yet remain intact and beprotected.

In the practice of my invention I provide a fixed handled jaw l and a movable jaw 2, both of the general pattern or construction shown in my former Letters Patent, and therefore in that respect need no further disclosure. Said movable jaw, also as in said Letters Patent, has its rack or ratchet portion 2 engaging a retaining cross-pin or bolt 3, headed down preferably upon the outer surface of the side or cheek, which, however, constitutes no characteristic feature of the present :invention. Said movablej aw is removably held in place in said fixed jaw under the action of a spring 4, which also permits said movable jaw to be slid notch by notch in eifecting its adj ustment or application to the article or pipe gripped. Said spring is preferably of fiat or plate metal having the requisite resistancy Serial No. 126,512. on model.)

slotted extension in said fixed jaw and has its upper limb formed into an inturned or rebent terminal 4 en a in a second crossin 7 b P: b

6, riveted or otherwise fixed to said stationary jaw, retaining its position as against upward displacement. Said spring has its lower limb extended upwardly and forwardly into an inclined terminal 4, adapted to bear upon or engage the back of the movable jaw, and thus retain the latter in effective engagement with the article or pipe gripped.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is r l. A wrench or tool comprising afixed, and a movable, member, and a spring having looped portion, with its upper-limb terminal rebent and engaging a cross-pin of said fixed member, and its lower-limb terminal of said spring upon said movablemember, substantially as set forth.

2. A wrench or tool comprising a fixed, and

a movable member, a spring having a looped GEO. McKEnoHER.

Witnesses: ROBERT LAKE,

H. U. ULRICKSEN. 

